https://www.designingbuildings.co.uk/w/index.php?feed=atom&target=Andrew_Chapman&title=Special%3AContributions%2FAndrew_Chapman 2026-07-04T11:54:30Z From Designing Buildings MediaWiki 1.17.4 https://www.designingbuildings.co.uk/wiki/Talk:ACM_cladding 2018-01-03T18:54:20Z

<p>Andrew Chapman: </p> <hr /> <div>'This states that ‘The external envelope of a building should not provide a medium for [https://www.designingbuildings.co.uk/wiki/Fire fire] spread if it is likely to be a [https://www.designingbuildings.co.uk/wiki/Risk risk] to [https://www.designingbuildings.co.uk/wiki/Health_and_safety health and safety]. The use of combustible [https://www.designingbuildings.co.uk/wiki/Materials materials] in the [https://www.designingbuildings.co.uk/wiki/Cladding cladding] system and extensive cavities may present such a [https://www.designingbuildings.co.uk/wiki/Risk risk] in tall buildings.’ As a result, [https://www.designingbuildings.co.uk/wiki/Materials materials] with [https://www.designingbuildings.co.uk/wiki/Limited_combustibility limited combustibility] must be used in buildings with storeys more than 18 m above the ground.'<br /> <br /> Does this follow? 12.5 says that combustible materials may present a risk. Then follows specific instructions, with 2 alternative routes to compliance. The Linear Route only specifies that insulation materials and filler materials etc should be of limited combustibility. Why then do you say in effect that the AD B2 requires that all materials be of limited combustibility?<br /> <br /> Andrew</div>

Andrew Chapman